ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,732, issued on March 3, was assigned to ZHONGSHAN KAPER ELECTRICAL Co. LTD (Guangdong, China).
"Power cord leakage detection and protection circuit" was invented by Bill Zou (Guangdong, China), Xingjin Yu (Guangdong, China) and Xiannan Li (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention discloses a power cord leakage detection and protection circuit, comprising a live wire, a neutral wire and a tripping coil, wherein a controlled switch controlled by the tripping coil is respectively provided on the live wire and the neutral wire; a shielded wire is respectively provided outside the live wire and the neutral wire; tail ...